ELECTRICAL CONNECTION vacon • 2924-hour support: +358 (0)201 212 575 • Email: vacon@vacon.com5.4 Option board OPTC2 (RS-485)Figure 5-11. Vacon RS-485 option board OPTC2Signal Connector DescriptionNC* 1* No connectionVP 2 Supply voltage – plus (5V)RxD/TxD –N 3 Receive/Transmit data – ARxD/TxD –P 4 Receive/Transmit data – BDGND 5 Data ground (reference potential for VP)*You can use this pin (1) to bypass the cable shield to the next slaveTable 5-10. OPTC2 bus connector signalsX4X1Bus connector Jumpers Interface board connectorGrounding plate12345